WK-4A( B)电动挖掘机直流控制系统技术改进浅探

Research on the Technical Innovation for DC Control System of WK-4A(B) Electric Excavator

针对ＷＫ－４型电动挖掘机直流电控系统存在的问题，提出了用“数字控制系统”替代“磁性触发器”触发可控硅的改进方案。

Regarding the existing problems in the DC control system of WK-4A(B) electric excavator, the author raises the proposal for improvement to trigger the thyristor using digital control system in lieu of magnetic trigger.